I try to disable File button in MS Word. example I know that we can disable backstage using customUI.xml:
<customUI xmlns="http://schemas.microsoft.com/office/2009/07/customui">
<backstage>
<button idMso="FileSave" visible="false"/>
<button idMso="FileSaveAs" visible="false"/>
<button idMso="FileOpen" visible="false"/>
<button idMso="FileClose" visible="false"/>
<button idMso="ApplicationOptionsDialog" visible="false"/>
...
</backstage>
</customUI>
But i need to fully disable button. User should have no abilities even click it. I must hide backstage from users. I saw similar question. This has 1 answer which says
It's not possible to hide this button
Also, Edraw library has such possibility link. Someone has any thought?